(Bloomberg) — New York Community Bancorp sank by double digits for the fourth time in five days, extending a rout that was triggered last week by its surprise quarterly loss and move to slash its dividend.

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Shares of the lender slumped as much as 17% on Tuesday, touching the lowest level since June 2000. The stock has now dropped more than 50% since its earnings release on Jan. 31, erasing roughly $4 billion in market value.

Investors have dumped the shares in the past week as analyst downgrades piled up and Moody’s Investors Service put the company’s credit rating on review for downgrade.

The latest tumble comes after a report that the bank faced pressure from officials at the Office of the Comptroller of the Currency before its decision to lower its quarterly dividend and increase its loan-loss provision to more than 10 times what analysts had been expecting.

Read more: NYCB’s Talks With Watchdog Led to Moves That Rocked Market

The bank was bracing for stiffer regulation following deals that lifted its assets above $100 billion, and also potential weakness in office and multifamily property markets.

Regional bank stocks more broadly have come under pressure following NYCB’s results given concerns about real estate exposure, leaving the KBW Regional Banking Index down 11% this year. The sector gauge was down less than 1% Tuesday as the stock market was steady overall.

Read more: A $560 Billion Property Warning Hits Banks From NY to Tokyo

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